EP3026922B1 - Videoempfangsvorrichtung, zusatzinformationsanzeigeverfahren und zusatzinformationsanzeigesystem - Google Patents

Videoempfangsvorrichtung, zusatzinformationsanzeigeverfahren und zusatzinformationsanzeigesystem Download PDF

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Publication number
EP3026922B1
EP3026922B1 EP14829140.4A EP14829140A EP3026922B1 EP 3026922 B1 EP3026922 B1 EP 3026922B1 EP 14829140 A EP14829140 A EP 14829140A EP 3026922 B1 EP3026922 B1 EP 3026922B1
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Prior art keywords
video
additional information
video signal
displayed
unit
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EP14829140.4A
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English (en)
French (fr)
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EP3026922A4 (de
EP3026922A1 (de
Inventor
Hiroshi Yabu
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25825—Management of client data involving client display capabilities, e.g. screen resolution of a mobile phone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4886—Data services, e.g. news ticker for displaying a ticker, e.g. scrolling banner for news, stock exchange, weather data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8126—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts
    • H04N21/8133—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/812—Monomedia components thereof involving advertisement data

Definitions

  • the present disclosure relates to a video reception device which obtains additional information related to video signals input from an outside, and superimposes the additional information on the video signals.
  • Patent Literature 1 has disclosed a data processing system.
  • a client device has transmitted video data to a server device which is a video recognition device through a network, and requested the server device to perform video recognition processing.
  • the server device has performed video recognition based on the received video data, and transmitted a video recognition result to the client device through the network.
  • WO2013/042531 A1 discloses a reception device that receives an AV content transmitted by a broadcasting device and extracts a feature value from the data of the received AV content, transmits the extracted feature value to a server and receives an identification result. Then, the reception device can access another server and acquire a command for controlling an operation of an application program that is executed in linkage with the AV content according to the identification result. When switching of the AV content is detected, the application program is closed.
  • the present disclosure provides a video reception device, an additional information display method and an additional information display system which are effective to perform control of obtaining additional information related to video signals input from an outside, and superimposing the obtained additional information on the video signals.
  • the video reception device is defined in claim 1.
  • the first exemplary embodiment will be described below with reference to FIGS. 1 to 11 .
  • FIG. 1 is a view schematically illustrating an example of a configuration of additional information display system 10 according to the first exemplary embodiment.
  • Additional information display system 10 includes broadcast station 12, STB (Set Top Box) 14 which is a video transmission device, video recognition device 20, additional information distribution device 30 and video reception device 40.
  • Additional information display system 10 is a communications system which is configured to specify which content a video received by video reception device 40 is, using a video recognition technique of video recognition device 20, obtain additional information related to the content from additional information distribution device 30, and display the additional information on video reception device 40.
  • Video reception device 40, video recognition device 20 and additional information distribution device 30 are connected with each other through communication network 16.
  • Communication network 16 is configured as a wired network, a wireless network or a combination of wired and wireless networks.
  • Communication network 16 is, for example, the Internet, yet may be an intranet, a commercial line, other communication lines or a combination of the intranet, the commercial line and other communication lines.
  • Video reception device 40 and STB 14 are connected with each other through a communications interface.
  • the communications interface is, for example, a HDMI (registered trademark) (High-Definition Multimedia Interface) yet may be a video cable or a wireless communications interface such as Wi-Fi (registered trademark), Bluetooth (registered trademark) or a wireless LAN (Local Area Network).
  • Broadcast station 12 is a transmission device which is configured to transmit (broadcast) broadcast signals. Broadcast station 12 broadcasts a television program including a main program and commercial messages (CM) by converting the television program into video signals, and superimposing the video signals on broadcast signals. The main program and the CMs are switched to each other as time passes. A main program and CMs will be referred to as "content" below. That is, broadcast station 12 broadcasts content which is switched as time passes.
  • the transmission device is by no means limited to broadcast station 12, and only needs to transmit or broadcast content which is switched as time passes.
  • STB 14 is a receiver (tuner) which is configured to receive broadcast signals broadcast from broadcast station 12 and extract video signals from the broadcast signals.
  • STB 14 may have a function of decoding the received video signals when, for example, broadcast station 12 broadcasts digital broadcast signals.
  • STB 14 receives a channel selected from a plurality of channels broadcast by broadcast station 12 according to a user's instruction, and outputs video signals of this channel to video reception device 40 through the communications interface (e.g. the HDMI (registered trademark)).
  • the video transmission device is by no means limited to STB 14, and may be a recording device or the like which has, for example, a recording function, a broadcast signal receiving function and a video signal output function.
  • Video reception device 40 is a video reception device which is configured to display, on displaying unit 54, a video based on video signals input from an outside, and is, for example, a television receiver.
  • Video reception device 40 is connected to communication network 16, and can transmit and receive data to and from video recognition device 20 and additional information distribution device 30 through communication network 16.
  • Video reception device 40 is configured to perform the following operations.
  • Video reception device 40 performs video recognition processing on video signals input from the video transmission device (e.g. STB 14) through the communication network using video recognition device 20, and specifies content represented by these video signals. Further, video reception device 40 obtains additional information (e.g. advertisement information) related to the content from additional information distribution device 30, superimposes the obtained additional information on these video signals and displays the additional information on displaying unit 54.
  • additional information e.g. advertisement information
  • video reception device 40 cyclically extracts a partial video by cyclically clipping part of input video signals, and transmits the partial video and a video recognition processing request (also referred to as a "video recognition request” below) to video recognition device 20 through communication network 16. Further, video reception device 40 obtains the video recognition processing result of the partial video from video recognition device 20 through communication network 16, and obtains additional information related to the obtained video recognition processing result from additional information distribution device 30 through communication network 16. Furthermore, video reception device 40 superimposes an image (indicated as "additional information 51" in FIG. 1 ) which is based on the obtained additional information, on a video which is being displayed on displaying unit 54. Details of the above will be described later.
  • additional information is "advertisement information related to content"
  • the additional information is by no means limited to advertisement information and may be, for example, tourist information, history information, personal profile information, a URL (Uniform Resource Locator), public bulletin information, information related to a program which is being broadcast and social information such as Twitter (registered trademark).
  • Video recognition device 20 is a server device connected to communication network 16, and is a website which performs content specifying processing based on video recognition processing.
  • the content specifying processing is processing of performing video recognition processing on a received partial video, and specifying content represented by the partial video based on the video recognition processing result.
  • video recognition device 20 analyzes the content broadcast by broadcast station 12, and performs video recognition processing using this analysis result.
  • Video recognition device 20 obtains substantially all items of contents broadcast from broadcast station 12. Further, video recognition device 20 analyzes the obtained content, checks a time, a volume, a broadcast format, details, a genre, characters, a time table or the like of the content, and creates analysis information. Furthermore, video recognition device 20 creates a fingerprint from video signals of the content obtained from broadcast station 12. This fingerprint is information for recognizing a video, and is, for example, a hash value of each image which configures a moving image. Video recognition device 20 may obtain content by receiving broadcast signals broadcast from the broadcast station, or may obtain content by receiving video signals transmitted from broadcast station 12 through a dedicated video line or the like. Further, this analysis may be performed, for example, automatically or manually by an operator. Analysis information which is an analysis result of each content and a fingerprint are stored in storage unit 23 of video recognition device 20 per video of each content (e.g. video signals of a plurality of frames).
  • video recognition device 20 When receiving a video recognition request accompanied by a partial video transmitted from video reception device 40 through communication network 16, video recognition device 20 cross-checks a fingerprint generated from the partial video and fingerprints generated in advance by video recognition device 20 and stored in storage unit 23, performs video recognition processing on this partial video and specifies the content corresponding to this partial video. Thus, video recognition device 20 performs content specifying processing of determining what content video the partial video transmitted from video reception device 40 is, and specifying the content. Further, video recognition device 20 reads an analysis result (analysis information) related to the specified content from storage unit 23, and returns the read information as the video recognition processing result to video reception device 40 through communication network 16.
  • analysis result analysis information
  • Video recognition processing based on such a method content specifying processing based on video recognition processing
  • ACR Automatic Content Recognition
  • Additional information distribution device 30 is a server device connected to communication network 16, and is a website (advertisement distribution site) which holds and distributes advertisement information of various commercial goods.
  • additional information distribution device 30 transmits additional information related to this video recognition processing result (analysis information) to video reception device 40 through communication network 16.
  • This additional information is, for example, advertisement information related to content specified by video recognition processing.
  • FIG. 2 is a block diagram schematically illustrating an example of configurations of video recognition device 20 and video reception device 40 according to the first exemplary embodiment.
  • FIG. 2 illustrates a main circuit block related to an operation described in the present exemplary embodiment, and does not illustrate functions and circuit blocks related to other operations for ease of understanding of the operations described in the present exemplary embodiment.
  • each circuit block illustrated in FIG. 2 may be configured as an independent circuit.
  • each circuit block may be configured such that a program created to realize one or a plurality of circuit blocks illustrated in FIG. 2 is executed by a processor.
  • Video recognition device 20 is a server device which includes HTTP (Hypertext Transfer Protocol) transmission/reception unit 21, retrieving unit 22 and storage unit 23. Video recognition device 20 is configured to provide service of content specifying processing based on video recognition processing, to video reception device 40 through communication network 16.
  • HTTP Hypertext Transfer Protocol
  • HTTP transmission/reception unit 21 is an interface for communication, and is, for example, a communications adapter which is adapted to standards of the Ethernet (registered trademark). HTTP transmission/reception unit 21 is configured to transmit and receive data to and from video reception device 40 through communication network 16.
  • Storage unit 23 is a storage device which is configured by, for example, a HDD (Hard Disk Drive). Storage unit 23 is configured to associate a fingerprint of content broadcast from broadcast station 12, and analysis information of an analysis result of the content with the content to store. This fingerprint is, for example, a hash value of each image which configures a moving image.
  • a HDD Hard Disk Drive
  • Storage unit 23 associates fingerprints and analysis results (analysis information) of, for example, all channels (e.g. 300 channels) broadcast from broadcast station 12 to store per content (e.g. a main program or a CM) with a slight time delay (e.g. 10 seconds) from a start of a broadcast.
  • This analysis result (analysis information) may include, for example, a program title, a CM title, a program outline, a CM outline, characters, a place related to a video, and a URL.
  • Retrieving unit 22 is configured to, when receiving a video recognition request accompanied by the partial video transmitted from video reception device 40 through HTTP transmission/reception unit 21, perform content specifying processing based on video recognition processing using the partial video, and return the result (analysis information) to video reception device 40 through HTTP transmission/reception unit 21.
  • a result of content specifying processing based on video recognition processing using a partial video will be also referred to simply as a "video recognition processing result”.
  • retrieving unit 22 receives the video recognition request accompanied by the partial video transmitted from video reception device 40, through communication network 16 and HTTP transmission/reception unit 21.
  • retrieving unit 22 generates a fingerprint of the received partial video (e.g. a hash value of each image which configures the partial video), cross-checks the generated fingerprint and the fingerprints stored in storage unit 23, and retrieves a fingerprint corresponding to the received partial video (video recognition processing).
  • retrieving unit 22 specifies the content corresponding to the fingerprint specified based on this retrieval result as content corresponding to the received partial video (content specifying processing).
  • retrieving unit 22 specifies the content corresponding to the received partial video.
  • retrieving unit 22 reads the analysis result (analysis information) associated with the specified content from storage unit 23, and returns the read analysis result as the video recognition processing result to video reception device 40 through HTTP transmission/reception unit 21 and communication network 16.
  • Video reception device 40 includes control unit 41, HTTP transmission/reception unit 42, operation signal reception unit 43, video output unit 44, displaying unit 54, video extraction unit 45, additional information display control unit 46, storage unit 47, obtaining unit 66 and video input unit 48.
  • Video reception device 40 is configured to perform content specifying processing based on video recognition processing using video recognition device 20, obtain analysis information which is the video recognition processing result from video recognition device 20, obtain additional information (e.g. advertisement information) related to the analysis information from additional information distribution device 30, superimpose an image of the additional information (e.g. the advertisement information related to a video) on the video (content) of the received video signals and display the additional information on displaying unit 54.
  • additional information e.g. advertisement information
  • HTTP transmission/reception unit 42 is an interface for communication, and is, for example, a communications adapter which is adapted to standards of the Ethernet (registered trademark). HTTP transmission/reception unit 42 is configured to transmit and receive data to and from video recognition device 20 through communication network 16.
  • Operation signal reception unit 43 is configured to receive an operation signal (an operation signal for video reception device 40) output from an operation unit (not illustrated) such as a remote control device (abbreviated as a "remote controller” below) which has received a user's operation. Operation signal reception unit 43 may be configured to receive a signal output from the remote controller including a gyro sensor based on a physical fluctuation of this remote controller.
  • an operation signal an operation signal for video reception device 40
  • an operation unit such as a remote control device (abbreviated as a "remote controller” below) which has received a user's operation.
  • Operation signal reception unit 43 may be configured to receive a signal output from the remote controller including a gyro sensor based on a physical fluctuation of this remote controller.
  • Video input unit 48 is a reception circuit and a decoder, and includes reception unit 49 which is configured to receive broadcast signals broadcast from the broadcast station, and input unit 65 which is configured to receive an input of video signals output from the video transmission device (e.g. STB 14).
  • Video signals received by video input unit 48 include content (e.g. a main program and CMs) switched as time passes.
  • Reception unit 49 is configured to receive broadcast signals transmitted from broadcast station 12, through an antenna (not illustrated) or the like.
  • Input unit 65 is an interface which is configured to receive an input of video signals output from the video transmission device installed outside.
  • Input unit 65 is configured to adapt to, for example, the standards of the HDMI (registered trademark), and can receive video signals transmitted from the video transmission device through the HDMI (registered trademark).
  • This video transmission device is, for example, STB 14 yet may be a video recording/playback device or the like.
  • the input unit may be configured to receive video signals transmitted through a video cable and video signals transmitted by wireless communication.
  • Video output unit 44 has a function of controlling displaying unit 54, and is configured to control displaying unit 54 based on the video signals input from video input unit 48 and display a video based on the video signals on displaying unit 54.
  • video output unit 44 superimposes an image based on the additional information, on the video which is being displayed on displaying unit 54.
  • Displaying unit 54 is a display which is configured to display a video based on video signals, and is, for example, a LCD (Liquid Crystal Display). However, the present exemplary embodiment is by no means limited to this configuration. Displaying unit 54 may be a PDP (Plasma Display Panel), an OLED (Organic Electro Luminescence Display) or the like.
  • PDP Plasma Display Panel
  • OLED Organic Electro Luminescence Display
  • Additional information display control unit 46 is configured to perform control of displaying additional information. More specifically, additional information display control unit 46 is configured to determine whether or not to display the additional information on displaying unit 54, and output to control unit 41, for example, an instruction to display the additional information on displaying unit 54, an instruction to continuously display the additional information which is being displayed on displaying unit 54, and an instruction to hide the additional information which is being displayed on displaying unit 54 based on this determination.
  • Additional information display control unit 46 performs video recognition processing (content specifying processing based on the video recognition processing) based on a partial video extracted by video extraction unit 45 using video recognition device 20. Further, additional information display control unit 46 analyzes the partial video extracted by video extraction unit 45. Details of the above will be described later. Further, additional information display control unit 46 determines based on the analysis result whether to display the additional information obtained from additional information distribution device 30, on displaying unit 54 based on the video recognition processing result obtained from video recognition device 20 (whether or not to superimpose the additional information on video signals) or continuously display or hide the additional information which is being displayed on displaying unit 54, and output an instruction based on this determination to control unit 41. In addition, additional information display control unit 46 may be configured to generate a fingerprint (e.g. a hash value of each image which configures a partial image) from the partial image extracted by video extraction unit 45, and perform video recognition processing based on the generated fingerprint using video recognition device 20.
  • a fingerprint e.g. a hash value of each image which configures
  • Video extraction unit 45 is configured to extract a partial video from the video signals input from video input unit 48.
  • Video extraction unit 45 is configured to extract from video signals a partial video of a predetermined period of time which is part of the video signals at a predetermined cycle.
  • the predetermined cycle is 3 seconds and a predetermined period of time is 3 seconds
  • video extraction unit 45 repeats an operation of extracting a partial video of 3 seconds from the video signals every 3 second. That is, video extraction unit 45 repeats an operation of continuously extracting a partial video of 3 seconds from the video signals every 3 second without a pause.
  • video extraction unit 45 repeats an operation of extracting a partial video of 3 seconds from the video signals every 15 second. That is, video extraction unit 45 repeats an operation of extracting a partial video of 3 seconds from the video signals at intervals of 12 second.
  • a partial video to be extracted from video signals may not be extracted in units of seconds, and, for example, may be extracted in units of a predetermined number of frames at a video frame rate.
  • Storage unit 47 is a storage device which is configured by, for example, a non-volatile memory.
  • Storage unit 47 stores, for example, program meta information such as an electronic program guide (EPG) received by video input unit 48, the additional information and the display control information of the additional information obtained from additional information distribution device 30 through HTTP transmission/reception unit 42, model information of STB 14 which transmits video signals to video reception device 40, and a template image group of a plurality of video transmission devices including STB 14.
  • the display control information of the additional information is information used to perform control of displaying the additional information, and includes, for example, information indicating a display period of the additional information.
  • Control unit 41 is configured to control each circuit block included in video reception device 40.
  • Control unit 41 employs a configuration including, for example, a non-volatile memory such as a ROM which stores programs (e.g. applications), a CPU which executes the programs, and a volatile memory such as a RAM which temporarily stores data, parameters and the like when the CPU executes a program.
  • a non-volatile memory such as a ROM which stores programs (e.g. applications)
  • a CPU which executes the programs
  • a volatile memory such as a RAM which temporarily stores data, parameters and the like when the CPU executes a program.
  • Control unit 41 performs, for example, the following control.
  • Control unit 41 controls video extraction unit 45 such that video extraction unit 45 extracts a partial video from video signals at predetermined cycles. Further, control unit 41 controls each circuit block to, every time video extraction unit 45 extracts a partial video, transmit the extracted partial video together with a video recognition request to video recognition device 20 through HTTP transmission/reception unit 42 and communication network 16, and request video recognition device 20 to perform the video recognition processing on this partial video. Furthermore, control unit 41 controls each circuit block to obtain the video recognition processing result of this partial video from video recognition device 20 through communication network 16 and HTTP transmission/reception unit 42, and obtain additional information based on the video recognition processing result from additional information distribution device 30 through communication network 16 and HTTP transmission/reception unit 42.
  • control unit 41 controls each circuit block to store the obtained additional information in storage unit 47, output the additional information to video output unit 44, superimpose the additional information on a video which is being displayed on displaying unit 54 and display the additional information.
  • control unit 41 controls each circuit block to hide the additional information which is being displayed on displaying unit 54 when additional information display control unit 46 determines to "hide the additional information".
  • additional information display system 10 may be configured such that, when video reception device 40 requests video recognition device 20 to perform video recognition processing, video reception device 40 creates a signal (data) indicating a video recognition processing request, and transmits this signal as the video recognition request to video recognition device 20.
  • a rule may be set between video reception device 40 and video recognition device 20 such that transmitting a partial video from video reception device 40 to video recognition device 20 is to request video recognition device 20 to perform video recognition processing instead of transmitting such a signal (data).
  • Obtaining unit 66 obtains a template video from video recognition device 20 through communication network 16 and HTTP transmission/reception unit 42.
  • the template video includes video signals of content which video recognition device 20 obtains from the broadcast station, and is included in the video recognition processing result which control unit 41 obtains from video recognition device 20.
  • the template video is used for local content detection described later. Details of the above will be described later.
  • FIG. 3A is a view schematically illustrating an example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 3B is a view schematically illustrating another example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 3C is a view schematically illustrating still another example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 3D is a view schematically illustrating yet another example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 3A illustrates an example where video 50 based on video signals input from STB 14 to input unit 65 is displayed as is on displaying unit 54.
  • FIG. 3A illustrates an example where an "ABC broadcast program" is displayed as an example of video 50.
  • FIG. 3B illustrates an example where a video obtained by superimposing on video 50 additional information 51 obtained from additional information distribution device 30 based on a video recognition processing result is displayed on displaying unit 54.
  • additional information 51 illustrated in FIG. 3B is only an example of additional information.
  • a display position, a display size or the like of additional information are by no means limited to a display position, a display size or the like of additional information 51 illustrated in FIG. 3B .
  • FIG. 3C illustrates an example where STB 14 receives a user's operation such as volume adjustment and menu display, and OSD (On Screen Display) image 52 is superimposed on video 50 according to this operation.
  • OSD On Screen Display
  • FIG. 3D illustrates an example where a user's operation sets a menu display mode to STB 14, and a plurality of icons 55 corresponding to each of options and reduced video 53 obtained by reducing video 50 are simultaneously displayed on displaying unit 54 to display a plurality of options on displaying unit 54.
  • This example will be referred to as "Case 2" or “content reduction display” below.
  • additional information display control unit 46 determines to "hide additional information 51 which is being displayed on displaying unit 54", and instructs control unit 41 to hide additional information 51. Details of display control of additional information 51 will be described later.
  • video reception device 40 when receiving an input of video signals output from the video transmission device such as STB 14, video reception device 40 performs video recognition processing on the video signals using video recognition device 20. Further, video reception device 40 obtains additional information 51 (e.g. advertisement information) related to the video recognition processing result from additional information distribution device 30, superimposes obtained additional information 51 on these video signals and displays the additional information on displaying unit 54.
  • additional information 51 e.g. advertisement information
  • Video reception device 40 displays or hides obtained additional information 51 (e.g. advertisement information) according to an advertisement period included in advertisement display control information obtained together with this additional information 51.
  • This advertisement display control information is a type of the above-described display control information of additional information.
  • video reception device 40 hides additional information 51 (e.g. advertisement information) which is being displayed.
  • the screen layout refers to a state of a video which is being displayed on displaying unit 54 (the layout of the video which is shown on a screen of displaying unit 54).
  • changing a video which displays content to a video which displays information other than the content by superimposing the information on the content, or changing a video which displays content to another video refers to "a change of a screen layout".
  • FIG. 4 is a flowchart schematically illustrating an operation of additional information display control performed by video reception device 40 according to the first exemplary embodiment.
  • Video extraction unit 45 of video reception device 40 extracts a partial video from video signals output from STB 14 and input to input unit 65 (step S10).
  • Control unit 41 controls each circuit block to transmit the partial video extracted by video extraction unit 45 together with a video recognition request to video recognition device 20 through HTTP transmission/reception unit 42 and communication network 16. Further, control unit 41 controls each circuit block to receive a video recognition processing result (analysis information) which is a response to the request from video recognition device 20 through communication network 16 and HTTP transmission/reception unit 42. Thus, control unit 41 recognizes what content is represented by the video signals input from STB 14 to input unit 65 (step S11).
  • Control unit 41 controls each circuit block to transmit information indicating the content determined in step S11, to additional information distribution device 30 through HTTP transmission/reception unit 42 and communication network 16. Further, control unit 41 controls each circuit block to obtain advertisement information related to the content and advertisement display control information, from additional information distribution device 30 through communication network 16 and HTTP transmission/reception unit 42 (step S12). In this case, control unit 41 may control each circuit block to obtain the advertisement information related to the content and the advertisement display control information from additional information distribution device 30 by designating a URL related to the content and accessing additional information distribution device 30. Control unit 41 may control each circuit block to obtain the advertisement information and the advertisement display control information by designating this URL and accessing additional information distribution device 30 when, for example, analysis information obtained from video recognition device 20 includes the URL.
  • control unit 41 controls each circuit block to store the advertisement information obtained in step S12 in storage unit 47.
  • Additional information display control unit 46 determines whether or not to display the advertisement information on displaying unit 54, based on the advertisement display period included in the display control information (step S13).
  • step S13 When it is determined in step S13 that the advertisement information is not displayed since, for example, the advertisement display period ends (No), additional information display control unit 46 instructs control unit 41 to hide the advertisement information.
  • control unit 41 controls each circuit block to hide the advertisement information when the advertisement information is being displayed on displaying unit 54, and continues a state where the advertisement information is not displayed on displaying unit 54 when the advertisement information is not displayed on displaying unit 54. Further, the flow returns to step S10 to repeat a series of these operations.
  • step S13 When it is determined in step S13 that the advertisement information is displayed for a reason that, for example, it is within the advertisement display period (Yes), additional information display control unit 46 instructs control unit 41 to display the advertisement information.
  • control unit 41 controls each circuit block to continue displaying the advertisement information when the advertisement information is being displayed on displaying unit 54. Further, control unit 41 controls each circuit block to, when the advertisement information is not displayed on displaying unit 54, output the obtained advertisement information to video output unit 44, and cause video output unit 44 to superimpose the advertisement information input from control unit 41 on video signals input from input unit 65 and display the advertisement information on displaying unit 54 (step S14).
  • additional information display control unit 46 performs screen layout change detection (step S15).
  • the screen layout change detection is to detect whether or not STB 14 which outputs video signals displays OSD image 52 (Case 1) and whether or not content is reduced and displayed (Case 2).
  • a transition from a state where a normal video is displayed e.g. FIG. 3B
  • Case 1 e.g. the video illustrated in FIG. 3C
  • Case 2 e.g. the video illustrated in FIG. 3D
  • Details of the screen layout change detection will be described later.
  • additional information display control unit 46 determines whether or not a change of the screen layout has been detected (step S16).
  • step S16 When it is determined in step S16 that "the change of the screen layout has been detected" (Yes), additional information display control unit 46 instructs control unit 41 to hide the advertisement information.
  • control unit 41 stops outputting the advertisement information to video output unit 44 to hide the advertisement information which is being displayed on displaying unit 54 (step S17).
  • control unit 41 When it is determined in step S16 that "the change of the screen layout has not been detected" (No), control unit 41 continues displaying the advertisement information, and repeats a series of operations from step S10 to step S16 until the advertisement display period included in the advertisement display control information ends. Further, when the advertisement display period ends, additional information display control unit 46 instructs control unit 41 to hide the advertisement information.
  • Video reception device 40 repeats a series of these operations.
  • step S15 the screen layout change detection in step S15 will be described.
  • FIG. 5 is a flowchart schematically illustrating an operation of the screen layout change detection performed by video reception device 40 according to the first exemplary embodiment.
  • Additional information display control unit 46 performs UI (User Interface) display detection (step S20).
  • the UI display detection is to determine a state of a screen layout of video signals, and detect that OSD image 52 is displayed or that content is reduced and displayed.
  • FIG. 6A is a view schematically illustrating an example of template matching performed by video reception device 40 according to the first exemplary embodiment.
  • FIG. 6B is a view schematically illustrating another example of template matching performed by video reception device 40 according to the first exemplary embodiment.
  • FIG. 6C is a view schematically illustrating an example of template image group 60 used for template matching performed by video reception device 40 according to the first exemplary embodiment.
  • frames indicating search areas 61 illustrated in FIGS. 6A and 6B are indicated for ease of description, and these frames are not actually displayed on displaying unit 54.
  • template image group 60 includes an OSD image group and an icon image group.
  • a design of OSD images varies per model of STB 14.
  • the OSD image group includes OSD images of a plurality of these models, and each OSD image is linked with information of a model which generates each OSD image. Further, STB 14 displays a plurality of icons whose designs are different.
  • the icon image group includes a plurality of icon images.
  • additional information display control unit 46 sets search area 61 to video 50 based on video signals. For example, a size which is 1/6 of video 50 is set to search area 61.
  • search area 61 is by no means limited to this size, and may be set to a size such as 1/8, 1/9 or 1/16 of video 50 suitable for template matching.
  • FIG. 6A illustrates an example where the video illustrated in FIG. 3C is template-matched
  • FIG. 6B illustrates an example where the video illustrated in FIG. 3D is template-matched.
  • additional information display control unit 46 template-matches template image group 60 and search area 61 while gradually moving search area 61 (while, for example, moving search area 61 in a direction indicated by arrows in FIGS. 6A and 6B ).
  • additional information display control unit 46 detects OSD image 52, and thereby detects that video signals output from STB 14 are in the state of Case 1.
  • additional information display control unit 46 detects icons 55, and thereby detects that video signals output from STB 14 are in the content reduction display state of Case 2.
  • UI image An image used for a user interface such as OSD image 52 or icon 55 will be referred to as a "UI image” below. Further, a state where a UI image is included in a video signal output from STB 14 will be referred to as "UI display”.
  • additional information display control unit 46 determines whether or not a UI is displayed based on a result of the UI display detection in step S20 (step S21).
  • step S21 When it is determined in step S21 that "the UI is displayed” (Yes), additional information display control unit 46 determines that "the change of the screen layout is detected” (step S24). Further, the flow moves to step S16 illustrated in FIG. 4 .
  • step S21 When it is determined in step S21 that "the UI is not displayed” (No), additional information display control unit 46 performs video switch detection (step S22). The video switch detection will be described later.
  • additional information display control unit 46 determines whether or not a video has been switched based on the video switch detection result in step S22 (step S23).
  • step S23 When it is determined in step S23 that "the video has been switched” (Yes), additional information display control unit 46 determines that "the change of the screen layout has been detected” (step S24). Further, the flow moves to step S16 illustrated in FIG. 4 .
  • step S23 When it is determined in step S23 that "the video has not been switched” (No), additional information display control unit 46 determines that "the change of the screen layout has not been detected". Further, the flow moves to step S16 illustrated in FIG. 4 .
  • step S20 Next, the UI display detection in step S20 will be described.
  • FIG. 7 is a flowchart schematically illustrating an operation of the UI display detection performed by video reception device 40 according to the first exemplary embodiment.
  • Additional information display control unit 46 determines whether or not model information of the video transmission device (e.g. STB 14) and a template image group associated with this model (the model of STB 14) are stored in storage unit 47 (step S30).
  • step S30 When it is determined in step S30 that the model information of STB 14 and the template image group associated with this model are stored in storage unit 47, and the model of STB 14 can be specified based on these pieces of information (Yes), additional information display control unit 46 reads template image group 60 associated with this model from storage unit 47 (step S31).
  • additional information display control unit 46 template-matches read template image group 60 and search area 61 of the image which is being displayed on displaying unit 54 (step S33).
  • the template matching is to search for a template image in a search target image.
  • the template matching is performed as follows. First, a region (search area 61) called a search window is clipped from the search target image. Further, a similarity between search area 61 and a template image is calculated. In this regard, the similarity is calculated by slightly moving search area 61 or changing a size of search area 61. The similarity may be calculated by a generally employed method of, for example, calculating and comparing histograms or converting video signals in a frequency domain and comparing the video signals. Further, the similarity is calculated such that, when the similarity between images is higher, the similarity is higher.
  • additional information display control unit 46 searches for a template image in a search target image.
  • an image search method such as the Viola-Jones method used for face detection may be used instead of template matching or in combination with template matching.
  • step S30 When it is determined in step S30 that "the model of STB 14 cannot be specified" (No), additional information display control unit 46 estimates the model of STB 14 using the result of the video recognition processing performed in step S11, obtains a template image group associated with the estimated model and stores the template image group in storage unit 47 (step S32).
  • additional information display control unit 46 obtains a model which can receive the "ABC broadcast program" using a server (not illustrated) provided by broadcast station 12. When one model is obtained, this model can be estimated as the model of STB 14. Further, when a plurality of models is obtained, a plurality of models can be estimated to include the model of STB 14. These obtained models will be referred to as "model candidates" below. Further, additional information display control unit 46 obtains a template image group associated with a model candidate from the server (not illustrated) which provides the template image group. Additional information display control unit 46 stores the template image group obtained in this way, in storage unit 47.
  • steps S31 and S33 the flow moves to steps S31 and S33, and additional information display control unit 46 template-matches the obtained template image group and search area 61.
  • Additional information display control unit 46 determines whether or not a UI is displayed (OSD image 52 or icons 55 are displayed) based on the template matching result (step S34).
  • step S34 When it is determined in step S34 that "OSD image 52 or icons 55 are displayed” (Yes), additional information display control unit 46 determines that "the UI is displayed” (step S36), and the flow moves to step S21 illustrated in FIG. 5 .
  • step S34 determines whether all template images have been template-matched as in step S33 (step S35).
  • step S35 When it is determined in step S35 that all template images has not been template-matched as in step S33 (No), the flow returns to step S33 and additional information display control unit 46 repeats the operations of steps S33 and S34.
  • step S35 When it is determined in step S35 that "all template images have been template-matched as in step S33" (Yes), additional information display control unit 46 performs the local content detection (step S37) and the flow moves to step S21 illustrated in FIG. 5 .
  • step S37 the local content detection in step S37 will be described.
  • FIG. 8A is a view schematically illustrating an example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 8B is a view schematically illustrating an example of a template video used for image comparison performed by video reception device 40 according to the first exemplary embodiment.
  • FIG. 8C is a view schematically illustrating an example of a plurality of regions set to a display video for the local content detection in video reception device 40 according to the first exemplary embodiment.
  • FIG. 8D is a view schematically illustrating an example of a plurality of regions set to a template video for the local content detection in video reception device 40 according to the first exemplary embodiment.
  • FIG. 8E is a view schematically illustrating an example of a similarity calculated for each of regions in video reception device 40 according to the first exemplary embodiment.
  • additional information display control unit 46 divides one screen into 30 regions of region (1) to region (30), compares a display video and a template video for each of the regions and calculates the similarity.
  • the number of regions set to one screen is by no means limited to these numerical values, and may be set to a numerical value suitable to perform the local content detection.
  • lines and numbers for partitioning each region illustrated in FIGS. 8C and 8D are indicated for ease of description, and these lines and numbers are not actually displayed on displaying unit 54.
  • FIG. 8E illustrates an example where each region illustrated in FIG. 8C and each region illustrated in FIG. 8D are compared, and the similarity of each region is calculated and compared with a threshold value.
  • FIG. 9 is a flowchart schematically illustrating an operation of local content detection performed by video reception device 40 according to the first exemplary embodiment.
  • obtaining unit 66 first obtains a template video from video recognition device 20 through communication network 16 and HTTP transmission/reception unit 42 (step S40).
  • the template video includes video signals of content which video recognition device 20 obtains from the broadcast station, and is included in the video recognition processing result which control unit 41 obtains from video recognition device 20.
  • the video recognition processing result which control unit 41 obtains from video recognition device 20 includes time information of the template video together with the template video. Additional information display control unit 46 coordinates the time such that the template video and video signal (a video based on these video signals is referred to as a "viewing video” below) input from STB 14 to input unit 65 of video reception device 40 become videos of the same time (step S41).
  • additional information display control unit 46 divides the template video into a plurality of (30 in the example illustrated in FIG. 8D ) regions as illustrated in, for example, FIG. 8D (step S42).
  • additional information display control unit 46 divides the viewing video into a plurality of (30 in the example illustrated in FIG. 8C ) regions as illustrated in, for example, FIG. 8C (step S43).
  • additional information display control unit 46 compares region (1) of the template video and region (1) of the viewing video, and calculates a similarity of region (1). Similarly, additional information display control unit 46 compares each subsequent region from region (2) of the template video and each subsequent region from region (2) of the viewing video, and calculates a similarity of each region (step S44).
  • the similarity may be calculated by a generally employed method of, for example, calculating and comparing histograms or converting video signals in the frequency domain and comparing the video signals. Further, the similarity is calculated such that, when the similarity between images is higher, the similarity is higher.
  • additional information display control unit 46 compares the similarity calculated in step S44 with a threshold value set in advance. Further, additional information display control unit 46 determines whether or not a number of regions whose similarities are less than the threshold value is equal to or greater than a predetermined number (step S45).
  • This predetermined number is, for example, 2 or may be a numerical value other than 2.
  • the threshold value is desirably set to a numerical value which allows two images to compare to be regarded as the same. For example, according to a configuration of calculating a similarity such that the similarity is 100% when two images to compare are completely the same, the threshold value is 90%. However, the threshold value is by no means limited to this numerical value.
  • step S45 When it is determined in step S45 that "the number of regions whose similarities are less than the threshold value is equal to or greater than the predetermined number (e.g. 2)" (Yes), additional information display control unit 46 determines that "the UI is displayed” (step S46), and the flow moves to step S21 illustrated in FIG. 5 .
  • the predetermined number e.g. 2
  • OSD image 52 is displayed on regions (1), (2), (7), (8), (13), (14), (19), (20), (25) and (26).
  • the similarities of these regions (10 regions) are less than the threshold value. That is, the number of regions whose similarities are less than the threshold value is equal to or greater than the predetermined number (e.g. 2), and therefore additional information display control unit 46 determines that "the UI is displayed on the viewing video" in this example.
  • step S45 When it is determined in step S45 that "the number of regions whose similarities are less than the threshold value is less than the predetermined number" (No), additional information display control unit 46 determines that "the UI is not displayed", and the flow moves to step S21 illustrated in FIG. 5 .
  • step S21 illustrated in Fig. 5 When it is determined in step S21 illustrated in Fig. 5 that "the UI is not displayed” (No), additional information display control unit 46 performs the video switch detection in step S22 and determines whether or not a video has been switched.
  • FIG. 10 is a flowchart schematically illustrating an operation of the video switch detection performed by video reception device 40 according to the first exemplary embodiment.
  • Additional information display control unit 46 detects a switch signal input through input unit 65 (step S50).
  • step S50 When STB 14 switches a channel or switches an input medium according to a user's operation, and a switch signal for notifying these switches is output from STB 14, additional information display control unit 46 detects this switch signal in step S50 (Yes).
  • Additional information display control unit 46 which has detected the switch signal determines that "the video has been switched" (step S52), and the flow moves to step S23 illustrated in FIG. 5 .
  • step S50 When the switch signal is not detected in step S50 (No), additional information display control unit 46 detects a particular content (step S51).
  • the particular content refers to content which make it possible to determine whether or not a video is switched based on a change of a video signal (or a speech signal or a signal indicating abnormality) when a normal content switches to a particular content.
  • the particular content is, for example, black mute (blue back), audio mute, a stream error, a decrease in a reception level and the like.
  • step S51 When the particular content is detected in step S51 (Yes), additional information display control unit 46 determines that "the video has been switched" (step S52), and the flow moves to step S23 illustrated in FIG. 5 .
  • step S51 When the particular content is not detected in step S51 (No), additional information display control unit 46 determines that "the video has not been switched", and the flow moves to step S23 illustrated in FIG. 5 .
  • FIG. 11A is a view schematically illustrating another example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 11A is a view schematically illustrating another example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • FIG. 11B is a view schematically illustrating still another example of a video displayed on displaying unit 54 of video reception device 40 according to the first exemplary embodiment.
  • Video reception device 40 may be configured to change at least one of the display size and the display position of additional information 51 such that additional information 51 does not overlap OSD image 52 as illustrated in an example in FIG. 11A in case of, for example, Case 1 illustrated in FIG. 3C .
  • video reception device 40 may be configured to change the display size and the display position of additional information 51 such that additional information 51 does not overlap icons 55 as illustrated in an example in FIG. 11B in case of, for example, Case 2 illustrated in FIG. 3D .
  • the display size or the display position of additional information 51 may be changed to prevent visibility of a UI image such as OSD image 52 or icons 55 from lowering since additional information 51 overlaps the UI image.
  • a displaying content of additional information 51 itself may be changed or a design of additional information 51 may be changed to an icon which visually represents additional information 51.
  • video reception device 40 is configured to transmit and receive data through communication network 16, and includes input unit 65, video extraction unit 45, control unit 41 and additional information display control unit 46.
  • Input unit 65 is configured to receive an input of video signals output from the video transmission device (e.g. STB 14) installed outside.
  • Video extraction unit 45 is configured to extract a partial video for video recognition processing, from the video signals.
  • Control unit 41 is configured to perform control of transmitting the partial video to video recognition device 20 connected to communication network 16 so as to request video recognition device 20 to perform the video recognition processing, obtaining a video recognition processing result from video recognition device 20, and obtaining additional information 51 (e.g. advertisement information) based on the video recognition processing result from additional information distribution device 30 connected to communication network 16.
  • Additional information display control unit 46 is configured to perform control of detecting whether or not a screen layout of the video signals has been changed, and superimposing additional information 51 on the video signals based on a result of the detection.
  • video reception device 40 can obtain additional information 51 related to the video signals input from the video transmission device, superimpose additional information 51 on the video signals, and perform control of superimposing additional information 51 on the video signals according to a screen layout of the video signals.
  • the video transmission device such as STB 14 receives a user's operation such as volume adjustment or menu display.
  • a user's operation such as volume adjustment or menu display.
  • OSD image 52 is superimposed on video 50 according this operation (e.g. the state of Case 1 illustrated in FIG. 3C ) or even when the menu display mode is set by the user's operation, and a plurality of icons 55 and reduced video 53 obtained by reducing video 50 are provided in a mixed arrangement on one screen (e.g. the state of Case 2 illustrated in FIG. 3D )
  • these video signals are output without being distinguished from normal video signals (video signals of video 50 alone).
  • video reception device 40 has difficulty in determining whether video signals input to input unit 65 are in the normal state, the state of Case 1, the state of Case 2 or other states.
  • video reception device 40 desirably performs control of superimposing additional information 51 (e.g. advertisement information) on video signals immediately according to the changed screen layout.
  • additional information 51 e.g. advertisement information
  • video reception device 40 desirably prevents OSD image 52 or icons 55 from hiding behind additional information 51 by stopping superimposing additional information 51 on video signals or changing a display size, a display position or the like of additional information 51 according to the changed screen layout.
  • video reception device 40 when a screen layout of video signals input from the video transmission device (e.g. STB 14) is changed, video reception device 40 according to the present exemplary embodiment can detect the changed screen layout, and stop superimposing additional information 51 on the video signals or change the display size, the display position or the like of additional information 51 according to the detected screen layout. Consequently, even when a UI image such as OSD image 52 or icons 55 appears on video signals input from the video transmission device according to a user's operation, video reception device 40 can prevent visibility of the UI image from lowering since the UI image hides behind additional information 51.
  • a UI image such as OSD image 52 or icons 55
  • video reception device 40 may include displaying unit 54 which is configured to display a video obtained by superimposing additional information 51 on video signals.
  • additional information display control unit 46 may be configured to perform control of hiding additional information 51 which is being displayed on displaying unit 54 when detecting the change of the screen layout of video signals input from the video transmission device.
  • video reception device 40 can hide additional information 51 which is being displayed on displaying unit 54. Consequently, it is possible to prevent additional information 51 from lowering visibility of an image whose screen layout has been changed.
  • additional information display control unit 46 may be configured to perform control of detecting whether or not a UI image is included in video signals input from the video transmission device, and hiding additional information 51 which is being displayed on displaying unit 54 based on the detection result.
  • video reception device 40 can hide additional information 51 which is being displayed on displaying unit 54. Consequently, it is possible to prevent visibility of the UI image such as OSD image 52 or icons 55 from lowering since the UI image hides behind additional information 51.
  • video reception device 40 may further include storage unit 47 which is configured to store template image group 60 including a plurality of template images related to a video transmission device which outputs video signals. Furthermore, additional information display control unit 46 is configured to determine whether or not template images are included in the video signals by template-matching search area 61 set to the video signals input from the video transmission device and each of the template images of template image group 60, and detect whether or not a UI image is included in the video signals based on the determination.
  • video reception device 40 can detect this UI image by template-matching template images. Consequently, it is possible to adequately determine whether or not to hide additional information 51 which is being displayed on displaying unit 54.
  • video reception device 40 may further include obtaining unit 66 which is configured to obtain from video recognition device 20 a template video related to video signals input from the video transmission device.
  • additional information display control unit 46 may be configured to divide the video signals and the template video into a plurality of regions (the 30 regions illustrated in FIGS. 8C and 8D ), compare the template video and the video signals for each of the regions, calculate a similarity for each of the regions, compare the calculated similarity with a threshold value set in advance, determine whether or not the number of regions whose similarities do not exceed the threshold value is a predetermined number of more, and detect whether or not the UI image is included in the video signals.
  • video reception device 40 can detect this UI image by comparing the template images and the video signals for each of the regions. Consequently, it is possible to adequately determine whether or not to hide additional information 51 which is being displayed on displaying unit 54.
  • additional information display control unit 46 may be configured to, when detecting content switching operation performed on the video transmission device which outputs video signals, perform control of hiding additional information 51 which is being displayed on displaying unit 54.
  • video transmission device e.g. STB 14
  • the video transmission device switches a channel or switches an input according to a user's operation, and the video transmission device outputs a switch signal for notifying these switches
  • additional information display control unit 46 in video reception device 40 can detect this switch signal and hide additional information 51 which is being displayed on displaying unit 54. Consequently, video reception device 40 can prevent additional information 51 (e.g. advertisement information) related to content before a channel is switched from being left displayed on displaying unit 54, i.e., prevent additional information 51 from being erroneously displayed even though the video transmission device (e.g. STB 14) receives a user's operation such as channel switching and content of video signals input from the video transmission device is switched.
  • additional information 51 e.g. advertisement information
  • additional information display control unit 46 is configured to, when detecting a particular content whose content switch can be detected, perform control of hiding additional information 51 which is being displayed on displaying unit 54.
  • video reception device 40 can hide additional information 51 which is being displayed on displaying unit 54.
  • video reception device 40 can hide additional information 51 which is being displayed on displaying unit 54.
  • video transmission device 40 when the video transmission device receives a user's operation such as channel switching or input switching, video reception device 40 detect a blank image (black mute, blue back, audio mute or the like) which is instantaneously produced upon these operation, and hide additional information 51 which is being displayed on displaying unit 54. Consequently, it is possible to prevent additional information 51 (e.g. advertisement information) related to content before channel switching from being left displayed on displaying unit 54, i.e., prevent additional information 51 from being erroneously displayed.
  • additional information 51 e.g. advertisement information
  • the first exemplary embodiment has been described as an exemplary technique disclosed in the present application.
  • the technique according to the present disclosure is not limited to this, and is also applicable to exemplary embodiments which are optionally changed, replaced, added and omitted.
  • each component described in the above first exemplary embodiment can also be combined to provide new exemplary embodiments.
  • video reception device 40 includes displaying unit 54 has been described in the first exemplary embodiment.
  • the video reception device according to the present exemplary embodiment is by no means limited to this configuration.
  • the video reception device may not include the displaying unit.
  • FIG. 12 is a block diagram schematically illustrating an example of a configuration of video reception device 140 according to another exemplary embodiment.
  • Video reception device 140 illustrated in FIG. 12 differs from video reception device 40 illustrated in FIG. 2 in the first exemplary embodiment in the following points.
  • Video reception device 140 does not include displaying unit 54, and video output unit 144 is configured to output video signals to video display device 154 installed outside through wires or by radio.
  • Video reception device 140 of this type is, for example, a recording device which has, for example, a recording function, a broadcast signal receiving function, a video signal input function and a video signal output function, and which is configured to transmit video signals to video display device 154 installed outside.
  • a recording device is, for example, a hard disk recorder, a DVD recorder, a BD recorder or the like.
  • FIG. 12 illustrates a main circuit block related to an operation described in the present exemplary embodiment, and does not illustrate functions and circuit blocks (e.g. a recording function) related to other operations.
  • additional information display control unit 46 determines whether or not to superimpose additional information 51 on video signals output from video output unit 144 to video display device 154.
  • an operation of additional information display control unit 46 is the substantially same as that of the first exemplary embodiment.
  • Video reception device 140 employing such a configuration can provide the same effects as those of video reception device 40 described in the first exemplary embodiment.
  • video reception device 40 transmits a partial video to video recognition device 20 and requests video recognition device 20 to perform content specifying processing
  • video reception device 40 may be configured to generate a fingerprint (e.g. a hash value of each image which configures a partial image) from a partial image, transmit this fingerprint to video recognition device 20 and request the video recognition device to perform video recognition processing.
  • video recognition device 20 performs an operation of receiving this fingerprint, cross-checking this fingerprint and the fingerprint generated in advance by video recognition device 20 and stored in storage unit 23, and retrieving content corresponding to the received fingerprint.
  • each component described in the present exemplary embodiment may be configured as an independent circuit.
  • each circuit block may be configured such that a program created to realize one or a plurality of circuit blocks is executed by a processor.
  • this program may be obtained by being downloaded from a server or the like or may be obtained through a predetermined recording medium (e.g. an optical disk such as a CD-ROM, a magnetic disk or a semiconductor memory).
  • each operation of the server described in the present exemplary embodiment may be collectively processed by a single server or may be distributed to and processed by a plurality of servers.
  • the present disclosure is applicable to a video reception device which can obtain additional information related to video signals input from a video transmission device installed outside, and superimpose the obtained additional information on the video signals. More specifically, the present disclosure is applicable to a television receiver, a hard disk recorder, a DVD recorder, a BD recorder and the like.

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  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Transfer Between Computers (AREA)

Claims (9)

  1. Videoempfangsvorrichtung (40), die so konfiguriert ist, dass sie Daten über ein Kommunikationsnetzwerk (16) sendet und empfängt, die Videoempfangsvorrichtung umfassend:
    eine Eingabeeinheit (48), die so konfiguriert ist, dass sie eine Eingabe eines Videosignals empfängt, das von einer Videoübertragungsvorrichtung (14) ausgegeben wird;
    eine Videoextraktionseinheit (45), die so konfiguriert ist, dass sie aus dem Videosignal ein Teilvideo für die Videoerkennungsverarbeitung extrahiert;
    eine Steuereinheit (41), die so konfiguriert ist, dass sie die Steuerung des Übertragens des Teilvideos an eine Videoerkennungsvorrichtung (20) durchführt, die mit dem Kommunikationsnetzwerk (16) verbunden ist, um die Videoerkennungsvorrichtung (20) zu veranlassen, die Videoerkennungsverarbeitung durchzuführen, das Ergebnis der Videoerkennungsverarbeitung von der Videoerkennungsvorrichtung (20) zu erhalten, das Ergebnis der Videoerkennungsverarbeitung an eine Zusatzinformations-Verteilungsvorrichtung (30) zu übertragen, die mit dem Kommunikationsnetzwerk (16) verbunden ist, und Zusatzinformationen basierend auf dem Ergebnis der Videoerkennungsverarbeitung der Zusatzinformations-Verteilungsvorrichtung (30) zu erhalten;
    eine Zusatzinformationsanzeige-Steuereinheit (46), die so konfiguriert ist, dass sie die Steuerung der Anzeige der Zusatzinformationen durchführt, wobei die anzuzeigenden Zusatzinformationen auf dem Videosignal überlagert werden und erkannt wird, ob ein UI(User Interface) Benutzeroberflächenbild im Videosignal enthalten ist oder nicht, und Ausblenden durch Stoppen der Überlagerung der Zusatzinformationen, wenn sie das im Videosignal enthaltene UI-Bild (Benutzeroberflächenbild) erkennt;
    eine Anzeigeeinheit (54), die so konfiguriert ist, dass sie ein Video basierend auf dem Videosignal anzeigt, wobei das angezeigte Video durch Überlagern der Zusatzinformationen auf dem Videosignal erzielt wird, wenn die Zusatzinformationen angezeigt werden;
    eine Speichereinheit (47), die so konfiguriert ist, dass sie eine Vorlagenbildgruppe speichert, die eine Mehrzahl von Vorlagenbildern enthält, die sich auf diese Videoübertragungsvorrichtung (14) beziehen,
    wobei die Zusatzinformationsanzeige-Steuereinheit (46) so konfiguriert ist, dass sie bestimmt, ob die Vorlagenbilder im Videosignal enthalten sind, und zwar durch Vorlagenvergleich eines Suchbereichs, der aus dem angezeigten Bild des Videosignals und jedem der Vorlagenbilder der Vorlagenbildgruppe ausgeschnitten wird, und basierend auf der Bestimmung erkennt, ob das UI Bild im Videosignal enthalten ist oder nicht.
  2. Videoempfangsvorrichtung nach Anspruch 1, ferner umfassend eine Erhaltungseinheit (66), die so konfiguriert ist, dass sie ein Vorlagenvideo erzielt, das sich auf das Videosignal von der Videoerkennungsvorrichtung (20) bezieht,
    wobei die Zusatzinformationsanzeige-Steuereinheit (46) so konfiguriert ist, dass sie das Videosignal und das Vorlagenvideo in eine Mehrzahl von Bereichen aufteilt, das Vorlagenvideo und das Videosignal für jeden der Bereiche vergleicht, eine Ähnlichkeit für jeden der Bereiche berechnet, die Ähnlichkeit mit einem im Voraus festgelegten Schwellenwert vergleicht, bestimmt, ob eine Anzahl von Bereichen, deren Ähnlichkeiten den Schwellenwert nicht überschreiten, gleich oder größer als eine vorbestimmte Anzahl sind oder nicht, und erkennt, ob das UI-Bild im Videosignal enthalten ist oder nicht.
  3. Videoempfangsvorrichtung nach Anspruch 1, wobei die Zusatzinformationsanzeige-Steuereinheit (46) für die Anzeige von Zusatzinformationen konfiguriert ist, um
    - eine Video-Switch-Erkennung durchzuführen, wenn erkannt wird, dass kein UI-Bild (User Interface) im Videosignal enthalten ist, und
    - beim Erkennen eines Inhalts-Umschaltvorgangs, der an einer Videoübertragungsvorrichtung (14) durchgeführt wird, die das Videosignal ausgibt, die Steuerung des Ausblendens durch Stoppen der Überlagerung der Zusatzinformationen, die auf der Anzeigeeinheit (54) angezeigt werden, durchzuführen.
  4. Videoempfangsvorrichtung nach dem vorstehenden Anspruch, wobei die Zusatzinformationsanzeige-Steuereinheit (46) für Zusatzinformationen so konfiguriert ist, dass sie beim Erkennen eines bestimmten Inhalts, mit dem bestimmt werden kann, ob ein Video basierend auf einer Änderung eines Videosignals auf diesen bestimmten Inhalt umgeschaltet wird oder nicht, eine Steuerung des Ausblendens durch Stoppen der Überlagerung der Zusatzinformationen, die an der Anzeigeeinheit angezeigt werden, durchführt.
  5. Zusatzinformations-Anzeigeverfahren einer Videoempfangsvorrichtung, die so konfiguriert ist, dass sie Daten über ein Kommunikationsnetzwerk sendet und empfängt, wobei das Zusatzinformations-Anzeigeverfahren Folgendes umfasst:
    Extrahieren (S10) eines Teilvideos zur Videoerkennungsverarbeitung aus einem Videosignaleingang einer externen Videoübertragungsvorrichtung (14);
    Übertragen (S11) des Teilvideos an eine Videoerkennungsvorrichtung (20), die mit dem Kommunikationsnetzwerk (16) verbunden ist, um die Videoerkennungsvorrichtung (20) zu veranlassen, die Videoerkennungsverarbeitung durchzuführen und ein Ergebnis der Videoerkennungsverarbeitung von der Videoerkennungsvorrichtung (20) zu erhalten;
    Erhalten von Zusatzinformationen (S12) basierend auf dem Ergebnis der Videoerkennungsverarbeitung von einer Zusatzinformations-Verteilungsvorrichtung (30), die an das Kommunikationsnetz (16) angeschlossen ist;
    Ausführen der Steuerung von
    - Anzeige der Zusatzinformationen (S14), wobei die anzuzeigenden Zusatzinformationen auf dem Videosignal überlagert werden;
    - Erkennen (S20), ob ein UI (User Interface)-Bild im Videosignal enthalten ist; und
    - Ausblenden (S17) durch Stoppen der Überlagerung der Zusatzinformationen, die angezeigt werden, wenn das im Videosignal enthaltene UI-Bild erkannt wird;
    An einer Anzeigeeinheit (54) Anzeigen eines auf dem Videosignal basierenden Videos, wobei das angezeigte Video durch Überlagerung der Zusatzinformationen auf dem Videosignal erzielt wird, wenn die Zusatzinformationen angezeigt werden;
    Speichern einer Vorlagenbildgruppe mit einer Mehrzahl von Vorlagenbildern, die sich auf eine Videoübertragungsvorrichtung beziehen, die das Videosignal ausgibt,
    Wobei, ob nun die Vorlagenbilder in das Videosignal eingeschlossen sind oder nicht, durch Vorlagenvergleich (S33) eines Suchbereichs bestimmt wird, der aus dem angezeigten Bild des Videosignals und jedem der Vorlagenbilder der Vorlagenbildgruppe ausgeschnitten wird, und ob das UI-Bild im Videosignal enthalten ist oder nicht.
  6. Zusatzinformations-Anzeigeverfahren nach Anspruch 5, ferner umfassend den Erhalt (S40) eines Vorlagenvideos, das sich auf das Videosignal von der Videoerkennungsvorrichtung bezieht,
    wobei das Videosignal und das Vorlagenvideo in eine Mehrzahl von Bereichen aufgeteilt werden (S42, S43), das Vorlagenvideo und das Videosignal für jeden der Bereiche verglichen werden, eine Ähnlichkeit für jeden der Bereiche berechnet wird (S44), die Ähnlichkeit mit einem im Voraus festgelegten Schwellenwert verglichen wird, bestimmt wird, ob eine Anzahl von Bereichen, deren Ähnlichkeiten den Schwellenwert nicht überschreiten, gleich oder größer als eine vorbestimmte Anzahl sind (S45), und ob das UI-Bild im Videosignal enthalten ist und erkannt wird (S21).
  7. Zusatzinformations-Anzeigeverfahren nach Anspruch 5, wobei das Verfahren ferner die Durchführung einer Video-Switch-Erkennung (S22) umfasst, wenn erkannt wird, dass kein UI-Bild (User Interface) im Videosignal enthalten ist, und wenn ein Inhaltsumschaltvorgang, der an einer Videoübertragungsvorrichtung durchgeführt wird, die das Videosignal ausgibt, erkannt wird, wird die Zusatzinformation, die an der Anzeigeeinheit angezeigt wird, durch Stoppen der Überlagerung ausgeblendet (S17).
  8. Zusatzinformations-Anzeigeverfahren nach dem vorstehenden Anspruch, wobei, wenn ein bestimmter Inhalt, mit dem bestimmt werden kann, ob ein Video basierend auf einer Änderung eines Videosignals umgeschaltet wird oder nicht, wenn ein normaler Inhalt auf diesen bestimmten Inhalt umschaltet, erkannt wird (S51), die Zusatzinformation, die an der Anzeigeeinheit angezeigt wird, durch Stoppen der Überlagerung ausgeblendet (S17) wird.
  9. Zusatzinformations-Anzeigesystem umfassend eine Videoempfangsvorrichtung (40) nach einem beliebigen der vorstehenden Ansprüche 1 bis 4, eine Videoerkennungsvorrichtung (20) und eine Zusatzinformations-Verteilungsvorrichtung (30), wobei die Vorrichtungen so konfiguriert sind, dass sie über ein Kommunikationsnetzwerk (16) miteinander Daten senden und empfangen;
    wobei die Videoerkennungsvorrichtung (20) so konfiguriert ist, dass sie die Videoerkennungsverarbeitung am über das Kommunikationsnetz empfangenen Teilvideo durchführt und das Ergebnis der Videoerkennungsverarbeitung über das Kommunikationsnetz (16) an die Videoempfangsvorrichtung überträgt, und
    wobei die Zusatzinformations-Verteilungsvorrichtung (30) so konfiguriert ist, dass sie die Zusatzinformationen, die dem Ergebnis der über das Kommunikationsnetz empfangenen Videoerkennungsverarbeitung entsprechen, über das Kommunikationsnetz (16) an die Videoempfangsvorrichtung überträgt.
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US20160073047A1 (en) 2016-03-10
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EP3026922A4 (de) 2016-08-03
US9955103B2 (en) 2018-04-24
EP3026922A1 (de) 2016-06-01
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